Speckle Remover: clean up tiny stray pixels

After Color Removal cuts out a background, you sometimes end up with tiny groups of pixels floating in the empty space — bits the background remover missed because they were a slightly different color than the rest of the background.

Speckle Remover finds those tiny floating pixel groups and erases them. The result is a much cleaner cutout.

Why this step matters

Stray pixels look fine on screen but show up obviously when printed. A handful of stray dots around a t-shirt design becomes visible specks on the actual shirt. Same with stickers, mugs, anything physical.

Add Speckle Remover after Color Removal in your pipeline and the cleanup happens automatically across your whole batch.

How to use it

1. Add Speckle Remover to your pipeline (most useful right after Color Removal).
2. Set Max cluster size — the biggest size of "speckle" you want to delete (defaults to 50 pixels).
3. Use View mode first to see what would get removed (highlighted in a bright color).
4. Switch to Delete mode when you're happy with what's being caught.
5. Optional: click Auto-detect to let ReadyPixl pick a Max cluster size based on your image.

The settings

How to find the right Max cluster size

Speckle is one of those tools where the best setting depends on your image. Workflow:

1. Start with the default (50).
2. Set Mode to View. Run the pipeline.
3. Look at the preview — are the highlighted speckles the actual stray bits you want gone? Are any pieces of your real design getting highlighted?
4. If too few speckles caught: raise Max cluster size (try 100 or 200).
5. If your real design is getting eaten: lower Max cluster size (try 25 or 10).
6. Once the highlights look right, switch Mode to Delete and process your batch.

For most Color-Removal cleanup, the default of 50 catches the right stuff.

Tips

• Always test in View mode first with a few sample images before running on a big batch. Saves you from accidentally erasing important bits of your design.
• Place Speckle right after Color Removal in your pipeline. That's when speckles exist; running it earlier won't find anything.
• Auto-detect is a good shortcut if you don't want to think about Max cluster size — it picks a reasonable value based on your image.

What to read next

• Color Removal — almost always run before Speckle (Speckle cleans up what Color Removal leaves behind)
• Transparency Cleaner — paired cleanup tool for faint halos
• Per-tool quirks — common Speckle issues and fixes
• For batches with very different content, Auto-detect adapts per image; a fixed Max cluster size might be too aggressive on some and too soft on others.
• Speckle Remover ignores pixels that are connected to your main subject. It only looks at isolated floating bits — your design stays safe as long as it's all one connected piece.

Things Speckle Remover doesn't do

• It doesn't fix big leftover blobs. If Color Removal missed a chunk bigger than your Max cluster size, this tool won't catch it. Either raise the Max cluster size, or fix the underlying Color Removal settings (lower the Tolerance).
• It doesn't work on solid backgrounds. Speckle Remover only sees transparent pixels and small isolated groups inside them. If your image still has a solid background, run Color Removal first.
• It can't tell speckles from intentional small details. A 30-pixel logo dot looks the same as a 30-pixel speckle to this tool. If your design has small details, set Max cluster size below their size to keep them safe.
• It doesn't smooth edges. For jagged edges from background removal, use the Edge Feather setting in Color Removal instead.